Flue-stop.



E. LUCA S.

FLUE STOP.

APPucm'pu men APR-.4. 1911.

1,245,359." Patenogd Nov. 6, 1917.

EARL LUCAS, OF ANDERSO1\T,-IOWA.

' FLUE-STOP.

Specification of Letters Patent.

" Application filed Apri14,1917. sriaim. 159,753.

To" aZZ whom it may concern."

Be it known that I, EARL LUCAS, a'citizen of the United States,r'esiding at Anderson, in the county of Fremont and'State of Iowa, have invented certain ne'w'and useful Improvements in F lueStops, of which the following is a specification,'reference being had to the accompanying drawings.

This invention relates to an improved flue stop vand has for its primary object to provide a simple and effective device for tightly closing a 'stove pipe flue in a wall so'asto obviate the entrance of smoke and soot into the room when the pipe is removed.

It is another important object'of the'invention to provide a'fi'u'e' stop-and retaining or holding means therefor, which is '50 constructed and arranged that vthe stop can be easily and quickly applied to close the flue, or removed.

It is a further object of my invention to provide a device for the above purpose, which is strong and durable in its construction, highly serviceable and convenient in practical use. and may be manufactured at relatively small cost.

with the above and other objects in view, my invention consists in the novel features of construction, combination and arrangement of parts to be hereinafter more fully described. claimed and illustrated in the accompanying drawing, in which,

Figure 1 is an elevation illustrating the preferred embodiment of my invention as applied to the smoke flue;

Fig. 2 is a section taken on the line 22 of Fig. 1; and

Fig. 8 is a perspective view of one of the clamping rods for the flue stop.

Referring in detail to the drawing, 5 designates the cylindrical body of the flue stop closed at one end by the wall 6. To the other end of the body 5, the wall plate 7 is soldered or otherwise permanently secured. This plate is of appreciably greater diameter than the body 5 to provide an outwardly projecting, annular flange which is crimped or corrugated, as at 8.

The end wall 6 and the face plate 7 are provided with diametrically opposed openings 9 adjacent to the cylindrical wall of the body 5, and through the corresponding openings 9 the clamping rods 10 are loosely engaged. Each of these rods is provided upon its end which projects through the wall; 6, with an angular hook'11. "A 'coil spring IQ is arranged upon each' rod within the cylindrical body '5 and b'ea'rsat one of its ends'against the walli6' and at its other end against the washer plate' 13 arranged upon the rod and held againstnn'ovement under the action of said spring'by a trans- PatentedNomfi, 191a.

verse stop pin 1% extending through therod.

The other ends of the rods 10 which extend through the face plate 7, are 'provided with suitable hand grasps 15, whereby said'ro'ds may be conveniently operated.

In t'he'use of the device, it willjbeuhderstood that after the stove pipeh'as been takenout, the flue oraperturein the wall leading tothechiinney flue "is iclosed by the insertion of the cylindrical body5 er the flue stop therein. The rods 10 areforced the angular hooks 11 over the inner face of the chimney wall. Upon releasing the inward pressure upon the rods. the springs 12 act to force the rods outwardly and hold the hooks 11 in clamping engagement with the wall. The springs 12 are of such tension as to effectually prevent any casual outward movement of the flue stop and to urge the crimped or corrugated flange 8 of the face plate toward the face of the wall around the flue opening. In this manner, it will be appreciated that the flue is completely closed and all possibility of soot or smoke entering through said flue from the chimney into the room or apartment from which the heating apparatus has been removed, is preeluded.

From the foregoing description, taken in connection with the accompanying drawing, the construction. manner of use and several advantages of the device will be clearly and fully understood. I have herein shown what I believe to be the preferred embodiment of the invention, but it is manifest, of course, that these stops can be made in various sizes and of asbestos or other similar material instead of sheet metal. if desired. The form and arrangement of the rods 10 and their clamping hooks 11. as well as the construction and proportions of the several other parts of the invention, may be greatly varied, and it will, therefore, be understood that I reserve the privilege of adopting all such legitimate changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus fully described my invention, what I desire to claim and'secure by Letters Patent is:

l. A flue stop including a hollow body closed at one end, a wall plate closing the other end of said body and of greater diameter than the body to provide a wall-engaging flange, rods longitudinally movable through the body and provided with a clamping hook on one of their ends for engagement with the inner face of the chimney wall, and a coil spring encircling each of the rods and urging the same in one direction to hold the hooks in their clamping positions and retain the cylindrical body within the flue. I

2. A flue stopincluding a cylindrical body closed at one end, a wall plate fixed to the other end of the'body and of greater diameter than said body to provide an annular flange for engagement with the wall face, said plate and the end wall of the body having openings therein, rods movable through said openings and provided with an angularly disposed hook on their inner end, and a coil spring arranged upon each of said rods within the cylindrical body and urging said rods outwardly to clampingly engage said angular hooks with the inner face 0 the chimney Wall and retain the body within the flue. a

3. A flue stop including a cylindrical body closed atone end, a wall plate fixed to the other end of said body for engagement with the base of the wall around the flue opening, diametrically opposed rods movable through said openings in said plate and the end wall of the body, each of said rods being provided upon its inner end with an angularly disposed hook which, upon rotation of the rod, is adapted to be disposed over the inne face of the chimney wall, and a spring arranged upon each of the rods within said body and urging the rods outwardly to clampingly engage the angular hooks thereof with the face of the chimney wall and retain the body within the flue.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

EARL LUCAS. Witnesses:

S. A. CHAMBERS, A. J. HEATH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. i 

